This week has certainly been an excellent illustration of the fickleness of the market as, for five consecutive days, the Dow dropped like a rock right out the gate and then, due to an onslaught of good news, all but fully recovered by close.  Today it was more of a surprise though since after the "after the bell" great reports from Amazon and Alphabet yesterday, you'd have thought there'd have been a big rally this morning right out the gate.  Instead, bad reports from McDonald's and Exxon sent the Dow plunging once again, again almost a hundred points, before the day's big rally resulted in a close just 24 points down, all on relatively high volume of 7.3 billion.

Markets | Fri Jul 29, 2016 5:48pm EDT

Tech shares and muted GDP growth push S&P 500 to record

REUTERS/BRENDAN MCDERMID

DJ:  18,432.24  -24.11       NAS: 5,162.13  +7.15       S&P:  2,173.60  +3.54 

Wall Street rose on Friday, with the S&P 500 index hitting a record intraday high for the seventh time this month as gains in technology heavyweights Alphabet and Amazon more than made up for losses in energy shares.

The benchmark index rose as much as 0.3 percent, touching an all-time high of 2,177.09, and completed its fifth straight month of gains.

Shares of Google parent Alphabet (GOOGL.O) jumped 3.33 percent a day after the Internet company posted strong quarterly revenue growth, while online retailer Amazon.com (AMZN.O) touched a record high after giving an upbeat forecast for the current quarter.

Alphabet contributed the most to gains on the Nasdaq and the S&P 500.

However, the Dow was dragged down by a 1.48 percent drop in McDonald's (MCD.N) and a 1.39 percent fall in Exxon (XOM.N), which reported a lower-than-expected quarterly profit. The stock was the top percentage loser on that index.

Aggregate second-quarter earnings of S&P 500 companies are now expected to fall 3.7 percent, worse than a 2.8 percent decline predicted on Thursday, according to Thomson Reuters I/B/E/S.

U.S. gross domestic product in the second quarter grew at a 1.2 percent rate, coming in below expectations for a rise of 2.6 percent and fueling arguments the Federal Reserve may not need to raise U.S. interest rates anytime soon.

"Investors are still willing to play chicken with the Fed, thus the S&P 500 has hit a new intraday all-time high," said Sam Stovall, U.S. equity strategist at S&P Global Market Intelligence in New York.

The Dow Jones industrial average .DJI ended down 0.13 percent at 18,432.24 while the S&P 500 .SPX gained 0.16 percent to 2,173.6.  The Nasdaq Composite .IXIC added 0.14 percent to 5,162.13.  For the week, the Dow fell 0.75 percent, the S&P edged down 0.07 percent and the Nasdaq rose 1.2 percent.  In July, the Dow rose 2.8 percent, the S&P climbed 3.6 percent and the Nasdaq surged 6.6 percent.

Volume was strong as investors wrapped up July. About 7.3 billion shares changed hands on U.S. exchanges, above the nearly 6.6 billion daily average over the past 20 sessions.

On Friday, seven of the 10 major S&P 500 indexes were higher, led by a 1.33 percent rise in the telecoms services index .SPLRCL.

Baidu (BIDU.O) dropped 3.64 percent after the Chinese Internet search engine posted its biggest quarterly profit decline since going public. The stock weighed the most on the Nasdaq.

Health insurer Cigna (CI.N) dropped 5.17 percent after reporting a lower-than-expected quarterly profit.

Advancing issues outnumbered declining ones on the NYSE by a 1.68-to-1 ratio; on Nasdaq, a 1.03-to-1 ratio favored advancers.

The S&P 500 posted 41 new 52-week highs and one new low; the Nasdaq Composite recorded 104 new highs and 35 new lows.